A breach of contract occurs when one party to a legally binding agreement fails to do what they promised, whether that failure is a missed deadline, defective work, non-payment, or a flat refusal to perform at all. The injured party can usually sue for money damages, and in narrower situations can cancel the contract or force the other side to actually perform. How much you can recover, and whether you can walk away from the deal, depends on how serious the breach was and what you did after you learned about it.
What You Have to Prove
Four elements decide whether a breach claim stands up: a valid contract existed, you performed your own obligations, the other party failed to perform theirs, and that failure caused you actual harm. Miss any one and the claim collapses.
A valid contract needs an offer, acceptance, and consideration — something of value exchanged, whether money, services, or a promise to do or not do something. Not every contract has to be in writing, but some do. Under the statute of frauds, agreements involving real estate transfers, contracts that can’t be completed within a year, and sales of goods worth $500 or more generally must be written to be enforceable.1Cornell Law School. Uniform Commercial Code 2-201 – Formal Requirements; Statute of Frauds
You also need to show you performed, or at least substantially performed, your side of the deal. Courts are skeptical of plaintiffs who didn’t follow through and then complain about the other party. If you never paid, suing the seller for not delivering is a steep climb.
Only parties to the contract can sue. Under the privity principle, a third party affected by a broken deal but not actually in the agreement generally cannot file a claim. The standard of proof is preponderance of the evidence — more likely than not — which is lower than the criminal standard but still demands solid records: signed agreements, emails, invoices, payment history, anything that pins down what was promised and what went wrong.
Material and Minor Breaches
Not every breach has the same weight, and the distinction controls what you can do about it.
A material breach is a failure serious enough to defeat the purpose of the contract. Think of a builder who never pours the foundation. When a breach is material, you are excused from continuing your own performance and can pursue damages for the full value of the deal. Courts look at several factors: how much of the expected benefit you lost, whether money can adequately replace it, how likely the breaching party is to fix the problem, and whether they acted in good faith. A contractor who tries hard and falls short is treated differently from one who simply walks off the job.
The counterpart is substantial performance. If a party did nearly everything the contract required and the shortfall is small relative to the whole, courts may find the contract was substantially performed, meaning the breach is not material. A classic example involved a builder who installed a functionally identical brand of pipe instead of the specified one; the court refused to let the homeowner withhold the full contract price over a substitution that did not affect the home’s value.2Cornell Law School. Substantial Performance
A minor breach — sometimes called a partial breach — means you still got the main benefit of the bargain, but something fell short. You cannot walk away or stop performing, but you can recover damages for the gap. Courts typically measure those damages one of two ways: the cost to fix the deficiency, or the difference in market value caused by the shortfall. If repairing a cosmetic problem would cost far more than the actual loss in value, courts often award the smaller diminution-in-value amount. To get the higher repair-cost figure, you generally need to show the repair is practical and reasonable.
When a Party Signals They Won’t Perform
Sometimes you know a breach is coming before the deadline arrives. A supplier writes to say next month’s shipment isn’t coming. A contractor announces they’ve taken another job. These are anticipatory repudiations, and the refusal has to be definite and unambiguous. Vague complaints or hints of trouble do not count.
Once the repudiation is clear, you don’t have to wait. Under the Uniform Commercial Code, you may wait a commercially reasonable time to see if the other side reverses course, or you can immediately pursue any available breach remedy.3Cornell Law School. Uniform Commercial Code 2-610 – Anticipatory Repudiation In practice, you can start looking for a replacement right away and later recover the extra cost from the breaching party.
Retracting a Repudiation
A party who repudiates can take it back, but only before one of three things happens: you cancel the contract, you materially change position in reliance on the repudiation, or you otherwise treat it as final. The retraction must clearly show an intent to perform and include any assurance of future performance you reasonably demand.4Cornell Law School. Uniform Commercial Code 2-611 – Retraction of Anticipatory Repudiation A valid, timely retraction puts the contract back in effect, though you get allowance for any delay the repudiation caused.
Demanding Assurance of Performance
There is a middle ground between everything being fine and outright repudiation. If you have reasonable grounds to doubt the other side will perform, maybe because they missed smaller obligations or their finances have deteriorated, you can demand adequate assurance of performance in writing. Until you get it, you may suspend your own performance if doing so is commercially reasonable. If the other party fails to respond within a reasonable time, not exceeding 30 days, the silence is treated as a repudiation.3Cornell Law School. Uniform Commercial Code 2-610 – Anticipatory Repudiation
Notice and Cure Before You Sue
Not every breach gives you an immediate right to sue. Many contracts include a notice-and-cure provision requiring you to notify the breaching party of the problem and give them a set window, often 10 to 30 days, to fix it before you can terminate the contract or file suit. Even without an express clause, courts often expect reasonable notice before you escalate a fixable problem.
If the breaching party cures within the window, the contract continues as if the breach never happened. Ignoring a notice-and-cure clause in your own contract can undermine your claim even when the underlying breach is real, so read the contract before you draft a demand letter.
Your Duty to Mitigate
This is where many breach claims lose value. Once the other party fails to perform, you are legally obligated to take reasonable steps to limit your own losses. If a seller refuses to deliver, you cannot close up shop and sue for every dollar of lost revenue. You have to look for a replacement at a reasonable price. If you find one, your damages shrink to the difference between the contract price and what you actually paid.
Failing to mitigate doesn’t erase your claim, but it caps your recovery. The court will reduce damages by whatever amount you could have avoided through reasonable effort. “Reasonable” is the operative word. Nobody expects you to take extraordinary measures or accept a clearly inferior substitute, but doing nothing and letting losses stack up will cost you at trial.
Defenses the Other Side Can Raise
Being accused of breaching does not mean you lose. The party raising a defense carries the burden of proving it, and several well-established defenses can defeat or reduce a claim.
- Force majeure. If the contract has a force majeure clause and an extraordinary event beyond the party’s control, such as a natural disaster, war, or pandemic, directly prevented performance, the clause may excuse the failure. Courts read these clauses narrowly; the specific event usually needs to be listed, and economic difficulty alone almost never qualifies.5Cornell Law School. Force Majeure
- Frustration of purpose. Even without a force majeure clause, performance may be excused when an unforeseeable event destroys the entire reason the contract existed, not just makes it harder or less profitable. The event must have been truly unforeseeable when the contract was formed.6Cornell Law School. Frustration of Purpose
- Lack of capacity. A contract can be voidable if a party couldn’t understand what they were agreeing to, most commonly because they were a minor or lacked mental capacity when they signed.
- Fraud or duress. A contract obtained through lies, threats, or undue influence is generally invalid from the start.
- Unconscionability. Courts can refuse to enforce a contract, or specific terms within it, if the agreement is so one-sided that enforcement would be grossly unfair, especially where bargaining power was severely imbalanced.
- Statute of frauds violation. If the law required the contract to be in writing and it wasn’t, the defense can argue the agreement is unenforceable.1Cornell Law School. Uniform Commercial Code 2-201 – Formal Requirements; Statute of Frauds
- Estoppel. If one party said performance wasn’t needed and the other relied on that statement, the first party can’t later turn around and claim a breach based on the very performance they excused.
What You Can Recover
The goal of contract remedies is to put you in the position you would have been in had the other party performed. Contract law aims to restore the bargain, not punish the breach.
Compensatory and Consequential Damages
Compensatory damages cover the direct financial loss: the difference between what you were promised and what you got. If you contracted to buy materials at $10,000 and the seller backed out, forcing you to pay $13,000 elsewhere, your compensatory damages are $3,000.
Consequential damages reach further, covering losses that flow from the breach but sit outside the contract’s face value, such as lost profits from a project you could not complete because materials arrived late. The catch is foreseeability. Under the rule from Hadley v. Baxendale, you can only recover consequential damages the breaching party had reason to foresee as a probable result at the time the contract was made. If they did not know about your downstream obligations, they typically are not on the hook for the ripple effects. Careful drafters spell out potential consequences in the contract itself to put the other side on notice.
Liquidated Damages
Some contracts fix damages in advance. A liquidated damages clause is enforceable only if the amount is a reasonable estimate of the harm the breach would cause and the actual harm would be difficult to calculate precisely at the time of contracting. If a court decides the number is really a penalty designed to punish rather than compensate, it won’t enforce the clause.
Specific Performance
When money cannot fix the problem, usually because the subject of the contract is unique, a court can order the breaching party to actually do what they promised. This remedy comes up most often in real estate deals, where every parcel is legally considered unique, and in sales of rare goods like artwork or collectibles. Specific performance is an exception, not the default.
Rescission
Rescission unwinds the contract and puts both parties back where they started. Instead of recovering money for what you lost, you cancel the deal and get back whatever you already paid or delivered. Rescission is available only for material breaches; a minor shortfall won’t justify tearing up the whole contract.
Nominal Damages
Sometimes a breach is real but caused no measurable financial harm. A court may award nominal damages, often as little as one dollar, to formally recognize that your legal rights were violated. That record matters if you need to enforce other provisions of the contract or if future disputes grow out of the same agreement.
Punitive Damages
Punitive damages are almost never awarded in contract cases. The rare exceptions involve conduct that goes beyond breaking a promise, such as fraud, bad faith, or an independent tort. If your only claim is that the other side didn’t perform, don’t expect punitive damages.
Attorney Fees
Under the American rule, each side pays its own attorney fees regardless of who wins. Two main exceptions apply. Many contracts contain a fee-shifting clause that makes the loser pay the winner’s legal costs, and courts can shift fees when a party litigates in bad faith, such as by filing frivolous motions or defying court orders. Without one of those exceptions, your legal fees come out of your own pocket even if you win on everything else.
The Deadline to File
Every breach claim is subject to a statute of limitations, a hard deadline after which you lose the right to sue. The window varies by state and by whether the contract is written or oral. Written contracts generally fall between about 3 and 15 years. Oral contracts typically run shorter, between 2 and 6 years. Once the deadline passes, the other side can raise it as a complete defense and the case gets dismissed no matter how strong it was on the merits.
The clock usually starts when the breach occurs, not when you discover it, though some jurisdictions apply a discovery rule in certain situations. Waiting to see if the other party will eventually come through is one of the most common and most expensive mistakes. If you think a contract has been broken, check your state’s deadline early. By the time you decide to act, the window may already be closing.